I get error: Attempt to invoke virtual method .. on a null object reference

Question

I do not know what am I doing wrong.

java.lang.NullPointerException: Attempt to invoke virtual method 'android.text.Editable android.widget.EditText.getText()' on a null object reference
at si.skorajporocena.skorajporocena.PrvaPrijavaActivity$1.onClick(PrvaPrijavaActivity.java:51)

Here is the code:

EditText pass;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_prva_prijava);

        pass = (EditText) findViewById(R.id.etPassword);

        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.floatingActionButton);
        viewPager = (ViewPager) this.findViewById(R.id.pager);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if(i==0){
                    if (pass.getText().toString().isEmpty()) { // <-- this is the 51 line
                        Snackbar.make(view, "Niste vnesli aktivacijske kode.", Snackbar.LENGTH_SHORT).
                                setAction("Action", null).show();
                    }
                    else {
                        i=1;
                        viewPager.setCurrentItem(i);
                    }
                }
                else if(i>0) {
                    i++;
                    viewPager.setCurrentItem(i);

                    if(i==3){
                        Intent intent;
                        intent = new Intent(getApplicationContext(),MainActivity.class);
                        startActivity(intent);
                        finish();
                    }
                    //Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                    //        .setAction("Action", null).show();
                }
            }
        });

your EditText referance is null check all your ids in xml – himel Oct 26 '17 at 10:04 — himel, Oct 26 '17 at 10:04
why you set multiple `.toString()` – IntelliJ Amiya Oct 26 '17 at 10:04 — IntelliJ Amiya, Oct 26 '17 at 10:04
himel, it's the same as in code above "etPassword" – Fisheroid Oct 26 '17 at 10:06 — Fisheroid, Oct 26 '17 at 10:06
IntelliJ Amiya, that's mistake. But same error still exist. – Fisheroid Oct 26 '17 at 10:06 — Fisheroid, Oct 26 '17 at 10:06
Check your Edittext id present in Layout xml file or not – Munir Oct 26 '17 at 10:09 — Munir, Oct 26 '17 at 10:09
@Fisheroid can u show your xml file – Soham Oct 26 '17 at 10:45 — Soham, Oct 26 '17 at 10:45

score -1 · Answer 1 · edited Oct 26 '17 at 10:07

-1

Check that the view R.id.etPassword is present in your layout.

edited Oct 26 '17 at 10:07

Dawnkeeper

2,844
1
25
41

answered Oct 26 '17 at 10:04

Pietro Scarampella

472
3
7

It is present in layout. – Fisheroid Oct 26 '17 at 10:09

score -1 · Answer 2 · answered Oct 26 '17 at 10:06

-1

Your pass variable is null. The most likely cause is a layout error with R.id.etPassword

answered Oct 26 '17 at 10:06

Dawnkeeper

2,844
1
25
41

Everything is okay in layout. – Fisheroid Oct 26 '17 at 10:09

score -1 · Answer 3 · answered Oct 26 '17 at 10:46

I have solved the problem. Problem was that pass = (EditText) findViewById(R.id.etPassword); was outside an if statement where I need variable pass.

Here it is what the code look now:

FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.floatingActionButton);
        viewPager = (ViewPager) this.findViewById(R.id.pager);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if(i==0){
                    pass = (EditText) findViewById(R.id.etPassword);
                    if (pass.getText().toString().isEmpty()) { // <-- this is the 51 line
                        Snackbar.make(view, "Niste vnesli aktivacijske kode.", Snackbar.LENGTH_SHORT).
                                setAction("Action", null).show();
                    }
                    else {
                        i=1;
                        viewPager.setCurrentItem(i);
                    }
                }

score -1 · Answer 4 · answered Oct 26 '17 at 10:48

-1

I think you are using id 'etPassword' from other .xml file. Thats way code compile successfully but run time when click on floating button null pointer exception occurred.

answered Oct 26 '17 at 10:48

Nilam Rajaput

69
3

I get error: Attempt to invoke virtual method .. on a null object reference

4 Answers4